//
//  AppDelegate.swift
//  TakeTime
//
//  Created by bachelor on 16/10/17.
//  Copyright © 2016年 bachelor. All rights reserved.
//

import UIKit

/// 全局账户信息
var sharedUserAccount = UserAccount.loadAccount()
let ZSwitchVCNotification = "ZSwitchVCNotification"

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    
    /// 检查更新
    private func isNewUpdate() -> Bool {
        // 获取当前版本信息
        let currentVersion = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as! String
//        let version = NumberFormatter().number(from: currentVersion)?.doubleValue ?? 0
        let version = Double(currentVersion)!
        // 获取沙河版本信息
        let versionKey = "versionKey"
        let sandboxVersion = UserDefaults.standard.double(forKey: versionKey)
        
        // 将版本写入沙盒
        UserDefaults.standard.set(version, forKey: versionKey)
        
        return version > sandboxVersion
    }
    
    /// 要显示的默认控制器
    private func defaultController() -> UIViewController {
        // 判断用户是否登录
        if sharedUserAccount != nil {
            return isNewUpdate() ? NewFeatureViewController() : WelcomeViewController()
        }
        return MainViewController()
    }
    
    private func setupAppearance() {
        UINavigationBar.appearance().tintColor = UIColor.orange
        UITabBar.appearance().tintColor = UIColor.orange
    }
    
    /// 设置网络
    private func setupNetwork() {
        // 设置网路指示器
        UIApplication.shared.isNetworkActivityIndicatorVisible = true
        // 设置网络缓存
        let urlCache = URLCache(memoryCapacity: 4 * 1024 * 1024, diskCapacity: 20 * 1024 * 1024, diskPath: nil)
        
        URLCache.shared = urlCache
    }
    
    
    
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        self.window = UIWindow(frame: UIScreen.main.bounds)
        window?.backgroundColor = UIColor.white
        
        setupAppearance()
        setupNetwork()
        // 注册通知
        NotificationCenter.default.addObserver(self, selector: #selector(AppDelegate.switchRootViewController), name: Notification.Name(rawValue: ZSwitchVCNotification), object: nil)
        
        window?.rootViewController = defaultController()
        window?.makeKeyAndVisible()
        return true
    }

    func switchRootViewController(_ n: Notification) {
        let isMain = n.object as! Bool
        window?.rootViewController = isMain ? MainViewController() : WelcomeViewController()
    }
    
    func applicationWillResignActive(_ application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(_ application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(_ application: UIApplication) {
        // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(_ application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(_ application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }


}

